978637736879 has 8 divisors (see below), whose sum is σ = 1067904819840. Its totient is φ = 889420656600.

The previous prime is 978637736861. The next prime is 978637736893.

978637736879 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 978637736879 - 2⁸ = 978637736623 is a prime.

It is a super-3 number, since 3×978637736879³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978637736819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12459737 + ... + 12538034.

It is an arithmetic number, because the mean of its divisors is an integer number (133488102480).

Almost surely, 2^978637736879 is an apocalyptic number.

978637736879 is a deficient number, since it is larger than the sum of its proper divisors (89267082961).

978637736879 is a wasteful number, since it uses less digits than its factorization.

978637736879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25001341.

The product of its digits is 4032758016, while the sum is 80.

The spelling of 978637736879 in words is "nine hundred seventy-eight billion, six hundred thirty-seven million, seven hundred thirty-six thousand, eight hundred seventy-nine".